Voicemail Switched to a Different System?

Has anyone else noticed that they are using a new voicemail system upon activating their EVO? I just went to play with the voicemail, and I was greeted by the lady voiceover from familiar Nextel Voicemail. I went ahead and went through the setup. Everything seems to be working correctly, so I don't think it's a fluke. This doesn't seem very far-fetched, as Sprint has adopted other formerly Nextel systems...i.e. billing, website, etc.